package com.sky.utils;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.util.UriUtils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.LinkedHashMap;
import java.util.Map;

@Data
@AllArgsConstructor
@Slf4j
public class BaiDuMapUtil {
    public String url;
    public String output;
    public String ak;
    public String callback;

    // public static void main(String[] args) throws Exception {
    //
    //     BaiDuMapUtil snCal = new BaiDuMapUtil();
    //
    //     Map params = new LinkedHashMap<String, String>();
    //     params.put("address", "北京市海淀区上地十街10号");
    //     params.put("output", "json");
    //     params.put("ak", ak);
    //     params.put("callback", "showLocation");
    //
    //
    //     snCal.requestGetAK(url, params);
    // }

    /**
     * 默认ak
     * 选择了ak，使用IP白名单校验：
     * 根据您选择的AK已为您生成调用代码
     * 检测到您当前的ak设置了IP白名单校验
     * 您的IP白名单中的IP非公网IP，请设置为公网IP，否则将请求失败
     * 请在IP地址为xxxxxxx的计算发起请求，否则将请求失败
     */
    public String requestGetAK(String address) throws Exception {
        Map<String, String> params = new LinkedHashMap<>();
        params.put("address", address);
        params.put("output", output);
        params.put("ak", ak);
        params.put("callback", callback);

        if (url == null || url.length() <= 0 || params == null || params.size() <= 0) {
            return "url or params is null";
        }

        StringBuffer queryString = new StringBuffer();
        queryString.append(url);
        for (Map.Entry<?, ?> pair : params.entrySet()) {
            queryString.append(pair.getKey() + "=");
            //    第一种方式使用的 jdk 自带的转码方式  第二种方式使用的 spring 的转码方法 两种均可
            //    queryString.append(URLEncoder.encode((String) pair.getValue(), "UTF-8").replace("+", "%20") + "&");
            queryString.append(UriUtils.encode((String) pair.getValue(), "UTF-8") + "&");
        }

        if (queryString.length() > 0) {
            queryString.deleteCharAt(queryString.length() - 1);
        }

        java.net.URL url = new URL(queryString.toString());
        System.out.println(queryString.toString());
        URLConnection httpConnection = (HttpURLConnection) url.openConnection();
        httpConnection.connect();

        InputStreamReader isr = new InputStreamReader(httpConnection.getInputStream());
        BufferedReader reader = new BufferedReader(isr);
        StringBuffer buffer = new StringBuffer();
        String line;
        while ((line = reader.readLine()) != null) {
            buffer.append(line);
        }
        reader.close();
        isr.close();
        System.out.println("AK: " + buffer.toString());
        return buffer.toString();
    }
}